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8/12/2019 Coefficients for Two Way Slab Design
http://slidepdf.com/reader/full/coefficients-for-two-way-slab-design 1/3
Coefficients of Two-Way Slab Design
এ
এম
িফরোজ
ফদ
1.00
0.95
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
Table 4.2: Coefficients for Negative Moments in Slabs1
M A Neg = C A Neg X w X A 2
MB Neg = CB Neg X w X B2
Ratio
Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 Case 7 Case 8 Case 9
C A Neg
CB Neg
0.045
0.045 0.076
0.050
0.050
0.075 0.071
0.071
0.033
0.061
0.061
0.033
C A Neg
CB Neg
0.050
0.041 0.072
0.055
0.045
0.079 0.075
0.067
0.038
0.056
0.065
0.029
C A Neg
CB Neg
0.055
0.037 0.070
0.060
0.040
0.080 0.079
0.062
0.043
0.052
0.068
0.025
C A Neg
CB Neg
0.060
0.031 0.085
0.066
0.034
0.082 0.083
0.057
0.049
0.046
0.072
0.021
C A Neg
CB Neg
0.065
0.027 0.081
0.071
0.029
0.083 0.086
0.051
0.055
0.041
0.075
0.017
C A Neg
CB Neg
0.069
0.022 0.056
0.076
0.024
0.085 0.088
0.044
0.061
0.036
0.078
0.014
C A Neg
CB Neg
0.074
0.017 0.050
0.081
0.019
0.086 0.091
0.038
0.068
0.029
0.081
0.011
C A Neg
CB Neg
0.077
0.014 0.043
0.085
0.015
0.087 0.093
0.031
0.074
0.024
0.083
0.008
C A Neg
CB Neg
0.081
0.010 0.035
0.089
0.011
0.088 0.095
0.024
0.080
0.018
0.085
0.006
C A Neg
CB Neg
0.084
0.007 0.028
0.092
0.008
0.089 0.096
0.019
0.085
0.014
0.086
0.005
C A Neg
CB Neg
0.086
0.006 0.022
0.094
0.006
0.090 0.097
0.014
0.089
0.010
0.088
0.003
1A crosshatched edge indicates that the slab continues across or is fixed at the support; an unmarked
edge indicates a support at which torsional resistance is negligible.
Where, w = Total Uniform Dead Load Plus
0.90
8/12/2019 Coefficients for Two Way Slab Design
http://slidepdf.com/reader/full/coefficients-for-two-way-slab-design 2/3
Coefficients of Two-Way Slab Design
এ
এম
িফরোজ
ফদ
1.00
0.95
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
Table 4.3: Coefficients for Dead Load Positive Moments in Slabs2
M A Pos DL= C A DL X w X A 2
MB Pos DL= CB DLXw X B2
Ratio
Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 Case 7 Case 8 Case 9
C A DL
CB DL
0.036
0.036
0.018
0.018
0.018
0.027
0.027
0.027
0.027
0.018
0.033
0.027
0.027
0.033
0.020
0.023
0.023
0.020
C A DL
CB DL
0.040
0.033
0.020
0.016
0.021
0.025
0.030
0.024
0.028
0.015
0.036
0.024
0.031
0.031
0.022
0.021
0.024
0.017
C A DL
CB DL
0.045
0.029
0.022
0.014
0.025
0.024
0.033
0.022
0.029
0.013
0.039
0.021
0.035
0.028
0.025
0.019
0.026
0.015
C A DL
CB DL
0.050
0.026
0.024
0.012
0.029
0.022
0.036
0.019
0.031
0.011
0.042
0.017
0.040
0.025
0.029
0.017
0.028
0.013
C A DL
CB DL
0.056
0.023
0.026
0.011
0.034
0.020
0.039
0.016
0.032
0.009
0.045
0.015
0.045
0.022
0.032
0.015
0.029
0.010
C A DL
CB DL
0.061
0.019
0.028
0.009
0.040
0.018
0.043
0.013
0.033
0.007
0.048
0.012
0.051
0.020
0.036
0.013
0.031
0.007
C A DL
CB DL
0.068
0.016
0.030
0.007
0.046
0.016
0.046
0.011
0.035
0.005
0.051
0.009
0.058
0.017
0.040
0.011
0.033
0.006
C A DL
CB DL
0.074
0.013
0.032
0.006
0.054
0.014
0.050
0.009
0.036
0.004
0.054
0.007
0.065
0.014
0.044
0.009
0.034
0.005C A DL
CB DL
0.081
0.010
0.034
0.004
0.062
0.011
0.053
0.007
0.037
0.003
0.056
0.006
0.073
0.012
0.048
0.007
0.036
0.004
C A DL
CB DL
0.088
0.008
0.035
0.003
0.071
0.009
0.056
0.005
0.038
0.002
0.058
0.004
0.081
0.009
0.052
0.005
0.037
0.003
C A DL
CB DL
0.095
0.006
0.037
0.002
0.080
0.007
0.059
0.004
0.039
0.001
0.061
0.003
0.089
0.007
0.056
0.004
0.038
0.002
2A crosshatched edge indicates that the slab continues across or is fixed at the support; an unmarked
edge indicates a support at which torsional resistance is negligible.
Where, w = Total Uniform Dead Load
0.90
8/12/2019 Coefficients for Two Way Slab Design
http://slidepdf.com/reader/full/coefficients-for-two-way-slab-design 3/3
Coefficients of Two-Way Slab Design
এ
এম
িফরোজ
ফদ
1.00
0.95
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
Table 4.4: Coefficients for Live Load Positive Moments in Slabs3
M APos LL= C A LL X w X A 2
MB Pos LL= CB LL X w X B2
Ratio
Case 1 Case 2 Case 3 Case 4 Case 5 Case 6 Case 7 Case 8 Case 9
C A LL
CB LL
0.036
0.036
0.027
0.027
0.027
0.032
0.032
0.032
0.032
0.027
0.035
0.032
0.032
0.035
0.028
0.030
0.030
0.028
C A LL
CB LL
0.040
0.033
0.030
0.025
0.031
0.029
0.035
0.029
0.034
0.024
0.038
0.029
0.036
0.032
0.031
0.027
0.032
0.025
C A LL
CB LL
0.045
0.029
0.034
0.022
0.035
0.027
0.039
0.026
0.037
0.021
0.042
0.025
0.040
0.029
0.035
0.024
0.036
0.022
C A LL
CB LL
0.050
0.026
0.037
0.019
0.040
0.024
0.043
0.023
0.041
0.019
0.046
0.022
0.045
0.026
0.040
0.022
0.039
0.020
C A LL
CB LL
0.056
0.023
0.041
0.017
0.045
0.022
0.048
0.020
0.044
0.016
0.051
0.019
0.051
0.023
0.044
0.019
0.042
0.017
C A LL
CB LL
0.061
0.019
0.045
0.014
0.051
0.019
0.052
0.016
0.047
0.013
0.055
0.016
0.056
0.020
0.049
0.016
0.046
0.013
C A LL
CB LL
0.068
0.016
0.049
0.012
0.057
0.016
0.057
0.014
0.051
0.011
0.060
0.013
0.063
0.017
0.054
0.014
0.050
0.011
C A LL
CB LL
0.074
0.013
0.053
0.010
0.064
0.014
0.062
0.011
0.055
0.009
0.064
0.010
0.070
0.014
0.059
0.011
0.054
0.009
C A LL
CB LL
0.081
0.010
0.058
0.007
0.071
0.011
0.067
0.009
0.059
0.007
0.068
0.008
0.077
0.011
0.065
0.009
0.059
0.007
C A LL
CB LL
0.088
0.008
0.062
0.006
0.080
0.009
0.072
0.007
0.063
0.005
0.073
0.006
0.085
0.009
0.070
0.007
0.063
0.006
C A LL
CB LL
0.095
0.006
0.066
0.004
0.088
0.007
0.077
0.005
0.067
0.004
0.078
0.005
0.092
0.007
0.076
0.005
0.067
0.004
3A crosshatched edge indicates that the slab continues across or is fixed at the support; an unmarked
edge indicates a support at which torsional resistance is negligible.
Where, w = Total Uniform Live Load
0.90
